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ISSN Online: 2377-424X

ISBN Print: 0-89116-299-2

International Heat Transfer Conference 7
September, 6-10, 1982, Munich, Germany

AUGMENTATION OF CONDENSATION HEAT TRANSFER BY APPLYING NON-UNIFORM ELECTRIC FIELDS

Get access (open in a dialog) DOI: 10.1615/IHTC7.580
pages 189-194

摘要

A fundamental study on heat transfer augmentation of filmwise condensation by use of electric fields has been conducted to develop condensers with higher performance for waste heat recovery plants and geothermal binary plants practice. Firstly, by setting a needle electrode to a horizontal liquid surface and applying D.C. high electric potential between the needle and the plate immersed in the liquid, the phenomenon of extracting some amount of liquid to the needle is newly found and from the electrohydrodynamical(EHD) standpoint this phenomenon is clarified by theory and experiment. Secondly, EHD phenomenon of removing condensate liquid falling along a vertical heat transfer plate surface is studied. Non-uniform electric fields generated by wire electrodes stretched horizontally and parallel to the plate are used to show condensation heat transfer coefficients increased up to several times with very small electric power consumption.